tree 3c2222d564c150a359f951a5f21ebc7e477a4f6e
parent ed1bc664daf58af7da47581fe43d42b95a1de65a
author Prashant Laddha <prladdha@cisco.com> 1430831787 -0300
committer Mauro Carvalho Chehab <mchehab@osg.samsung.com> 1431977249 -0300

[media] v4l2-dv-timings: fix overflow in gtf timings calculation

The intermediate calculation in the expression for hblank can exceed
32 bit signed range. This overflow can lead to negative values for
hblank. Typecasting intermediate variable to higher precision.

Cc: Martin Bugge <marbugge@cisco.com>
Signed-off-by: Prashant Laddha <prladdha@cisco.com>
[hans.verkuil@cisco.com: made the denominator u32, since that's what div_u64 expects]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>